METHOD FOR PRODUCING SURFACE-MODIFIED BASE MATERIAL, METHOD FOR PRODUCING JOINED BODY, NEW HYDROSILANE COMPOUND, SURFACE TREATMENT AGENT, SURFACE TREATMENT AGENT KIT, AND SURFACE-MODIFIED BASE MATERIAL
申请人:KYOTO UNIVERSITY
公开号:US20170022223A1
公开(公告)日:2017-01-26
The method for producing a surface-modified base material according to the present invention includes a step of bringing a base material having a polar group present on a surface thereof into contact with a hydrosilane compound having a molecular structure A and having a Si—H group composed of a silicon atom of the molecular structure A and a hydrogen atom bonded to the silicon atom in the presence of a borane catalyst so as to allow a dehydrocondensation reaction to take place between the base material and the compound, thereby forming the base material surface-modified with the molecular structure A. This production method is capable of surface-modifying a base material at a lower temperature in a shorter time than conventional methods and allows a wide variety of options for the form, type, and application of the base material, the mode of the modification reaction, and the type of the molecular structure with which the base material is surface-modified.
Monosilacyclobutanes of the type RR′2CH2CH2 are prepared by ring closure reactions of 3-halopropylhalosilanes and by substitution of SiCl containing silacyclobutane rings with organometallic reagents (RMgX, LiR, NaCp). Under optimal experimental conditions yields between 50 and 95% can be obtained by both procedures. Characterization of the compounds is accomplished by analytical (C, H, N) and NMR
Continuous‐Flow Asymmetric Hydrogenation for the Synthesis of an (<i>S)‐</i>Metolachlor Intermediate Using Catalysts Immobilized on a Core/Shell‐Type Support
Inspired by homogeneous borane catalysts that promote Si-H bond activation, we herein describe an innovative method for surface modification of silica using hydrosilanes as the modification precursor and tris(pentafluorophenyl)borane (B(C6F5)3) as the catalyst. Since the surface modification reaction between surface silanol and hydrosilane is dehydrogenative, progress and termination of the reaction
Immobilization of chiral phosphine ligands on silica gel by means of the allylsilane method and their use for catalytic asymmetric reactions
作者:Kazuko Aoki、Toyoshi Shimada、Tamio Hayashi
DOI:10.1016/j.tetasy.2004.03.044
日期:2004.6
Three chiral phosphine ligands containing an allylsilyl group at the terminus of the side chain were prepared and immobilized on a silica gel surface by use of the allylsilane modification method. The silica-supported chiral phosphine ligands were used for rhodium-catalyzed hydrogenation and palladium-catalyzedallylicalkylation and showed high enantioselectivity.